Left-wing political commentator Hasan Piker was set to debate Charlie Kirk on September 25. He was streaming live when alleged murderer Tyler Robinson's bullet fatally pierced Kirk's neck.
The death of Kirk has led to an outpouring of grief and a maelstrom of outrage that a far-right advocate and activist could be shot dead while giving a speech at Utah Valley University.
There has been praise of Kirk from US President Donald Trump, while MAGA advocates have blamed the political left for creating the circumstances where Kirk, a young Conservative poster boy, could be assassinated.
Piker says rather than galvanise the US against violence, Kirk's death on September 10 has only made the situation worse.
"I was horrified because as a political commentator, this is something that's constant